为降低笼型倍半硅氧烷环氧树脂的官能度,合成了一种含有部分甲基的笼型倍半硅氧烷环氧树脂(GM-POSS),其结构以六面体的T8结构为主.用DSC、TG、TBA和x-射线能谱仪研究了GM-POSS/双酚-A环氧共混物与甲基四氢苯酐(MeTHPA)的固化性能及热性能.结果表明2种环氧可共同固化,固化反应的平均活化能Ea为71.10 kJ/mol,反应级数为一级;固化树脂的玻璃化转变温度、热分解温度及热残余量均随GM-POSS加入量的增加而升高.
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